Dataprobe 4PK-SCS - Manual (Page 7)

Model 4PK-SCS Page 7
LEAD CONTROL OF PORTS
The 4PK-SCS provide the means for automatic port selection via control leads. The feature must be set
up prior to use. Any port can access the master by raising the RTS or DTR lead (jumper selectable)
provided no other port is already connected by Menu, Manual or Code Control. If another port is
connected the request is placed in queue. The queue is first in first out.
Once a port has been connected via lead control it remains in connected until the control lead has gone
low. If a port has been manually selected, and another port requests access, the manually selected
port remains active until it is deselected via the Menu, Code or Manual Control.
MANUAL CONTROL OF PORTS
The manual push-button switch on the front panel can be used for local control of the 4PK-SCS. Each
time the button is depressed, the port will cycle to the next port. To return the 4PK-SCS to automatic
operation, depress the push-button switch for over two seconds; all Port LEDs will turn off.
The Timeout feature, if enabled continues to operate when Manual control is established. To override
this feature, select Timeout = 0 from the Programming menu.
When manual control is selected, lead control is locked out. Escape codes will override the manual
selection only in Terminal Mode